I'm hearing that the box stores are not very helpful after the fact if they didn't do the install. I don't know how helpful they are if they DO install cabinets either, for that matter, but figured I'd give a heads up.

This is true, but they usually don't do much after the fact either. Your hired professional is responsible for knowing what is what before they start anyway.
Pictures are worth alot also. And court is court, depends on how good your lawyer is.
I figure they have to have a manuf, warrantee...even if you did it yourself.

Our cabinets were installed yesterday. They look great. As I was watching the install I kept thinking that I was so glad I didn't try it myself. The countertop will be here in a few weeks. Just wanted to let everyone know how things went.

I am looking to install new custom or semicustom cabinets and someone told me about a company Custom Kitchen Cabinets, Solid wood entry doors, kitchen cabinets, refacing that manufacturer their own cabinets, doors and dovetail drawers. They are suppose to have the best quality products, they even have green friendly cabinets I guess they can ship in blanket wrapped trucks anywhere in the USA and they sell direct(no middle man). I guess there prices are pretty good too.